[HBASE-12761] On region jump ClientScanners should get next row start key instead of a skip.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.1.0, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Jurriaan Mous
• Reporter: Jurriaan Mous
• Created: 27/Dec/14 12:29
• Updated: 03/Jun/15 15:28
• Resolved: 30/Dec/14 22:51

Description

While working on async scanner I had some trouble with the extra RPC calls that happen to let the Scanner advance 1 row so it skips the last already known row.
This RPC call can be avoided by letting the start key be the last row with an appended 0. This saves quite some logic from the scanners and improves performance by saving extra RPC calls.